Floor cleaning system



FIG. 1 is a front perspective view of our design;

FIG. 2 is a rear perspective view of our design;

FIG. 3 is front view of our design;

FIG. 4 is a rear view of our design;

FIG. 5 is a first side view of our design;

FIG. 6 is a second side view of our design;

FIG. 7 is a top view of our design; and,

FIG. 8 is a bottom view of our design.

The broken lines depict portions of the floor cleaning system in which the design is embodied that are not considered part of the claimed design. 

CLAIM We claim, the ornamental design for a floor cleaning system, as shown and described. 